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placed over the positive meniscus to eliminate air After the bottle was capped, it was <br /> inverted and tapped to verify that it contained no air bubbles The sample containers for <br /> other parameters were filled, filtered as required, and capped <br /> When required, dissolved concentrations of metals were determined using appropriate <br /> field filtration techniques The sample was filtered by emptying the contents of the Teflon <br /> bailer into a pressure transfer vessel A disposable 0 45-micron acrylic copolymer filter <br /> was threaded onto the transfer vessel at the discharge point, and the vessel was sealed <br /> Pressure was applied to the vessel with a hand pump and the filtrate directed into the <br /> appropriate containers Each filter was used once and discarded <br /> Sample Preservation and Handling <br /> The following section specifies sample containers, preservation methods, and sample <br /> handling procedures <br /> Sample Containers and Preservation <br /> Sample containers vary with each type of analytical parameter Container types and <br /> materials were selected to be nonreactive with the particular analytical parameter tested <br /> Sample Handling <br /> Sample containers were labeled immediately prior to sample collection Samples were <br /> kept cool with cold packs until received by the laboratory At the time of sampling, each <br /> sample was logged on an ARCO chain-of-custody record that accompanied the sample to <br /> the laboratory <br /> Samples that required overnight storage prior to shipping to the laboratory were kept cool <br /> {4°C} in a refrigerator The refrigerator was kept in a warehouse, which was Iocked when <br /> not occupied by a Pinnacle employee A sample/refrigerator log was kept to record the <br /> date and time that samples were placed into and removed from the refrigerator <br /> Samples were transferred from Pinnacle to an ARCO-approved laboratory by courier or <br /> taken directly to the laboratory by the environmental sampler Sample shipments from <br /> Pinnacle to laboratories performing the selected analyses routinely occurred within <br /> 24 hours of sample collection <br /> CM�QMRWZCO\2NDQ99%0548Q299 DOC-98Vsg 1 A-4 <br />